COMAP早期科学: V. $z \sim 3$处的约束与预测
宇宙学与河外天体物理
2022-07-14 v3 星系天体物理
摘要
我们在COMAP Pathfinder早期科学结果背景下,呈现其瞄准的一氧化碳(CO)谱线强度信号的当前模型状态。我们的基准模型将暗物质晕性质与CO光度相关联,利用星系-晕连接的经验模型和先前CO(1-0)观测来告知参数先验。Pathfinder早期科学数据跨越波数-Mpc,代表了对CO(1-0)功率谱团簇分量的首次直接3D约束。我们对红移空间团簇振幅的95%上限K较CO功率谱巡天(COPSS)在Mpc处报告的K间接上限有大幅改进。COMAP上限排除了先前文献中模型的子集,并约束了COPSS结果的解读,展示了COMAP与干涉CO巡天的互补性。利用来自先验的谱线偏置预期,我们还约束了平方平均谱线强度-偏置乘积K,以及宇宙分子气体密度Mpc(95%上限)。基于早期仪器性能和我们当前的CO信号估计,我们预测五年Pathfinder活动将以整体信噪比9-17探测CO功率谱。在此之间,我们还期望利用重叠星系巡天数据探测CO-星系交叉谱,从而增强对宇宙恒星形成和星系演化历史的推断。
引用
@article{arxiv.2111.05931,
title = {COMAP Early Science: V. Constraints and Forecasts at $z \sim 3$},
author = {Dongwoo T. Chung and Patrick C. Breysse and Kieran A. Cleary and Håvard T. Ihle and Hamsa Padmanabhan and Marta B. Silva and J. Richard Bond and Jowita Borowska and Morgan Catha and Sarah E. Church and Delaney A. Dunne and Hans Kristian Eriksen and Marie Kristine Foss and Todd Gaier and Joshua Ott Gundersen and Stuart E. Harper and Andrew I. Harris and Brandon Hensley and Richard Hobbs and Laura C. Keating and Junhan Kim and James W. Lamb and Charles R. Lawrence and Jonas Gahr Sturtzel Lunde and Norman Murray and Timothy J. Pearson and Liju Philip and Maren Rasmussen and Anthony C. S. Readhead and Thomas J. Rennie and Nils-Ole Stutzer and Bade D. Uzgil and Marco P. Viero and Duncan J. Watts and Risa H. Wechsler and Ingunn Kathrine Wehus and David P. Woody},
journal= {arXiv preprint arXiv:2111.05931},
year = {2022}
}
备注
Paper 5 of 7 in series. 17 pages + appendix and bibliography (30 pages total); 15 figures, 6 tables; accepted for publication in ApJ; v3 reflects the accepted version with minor changes and additions to text